CN218148321U

CN218148321U - A precast tubular pile head structure and tubular pile for sandy foundation

Info

Publication number: CN218148321U
Application number: CN202222287340.XU
Authority: CN
Inventors: 陈奎; 程建军
Original assignee: Yancheng Yigang Supply Chain Management Co ltd
Current assignee: Yancheng Yigang Supply Chain Management Co ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2022-12-27
Anticipated expiration: 2032-08-30

Abstract

The utility model discloses a precast tubular pile head structure and tubular pile for sand foundation, head structure include sleeve pipe, outer helical blade. The sleeve is cylindrical and is sleeved at the bottom of the pile body, the pile body is a hollow cylinder long and thin concrete prefabricated component, and the sleeve is fixedly connected with the pile body. The outer helical blade is fixed on the sleeve, and the rotating clamping jaw of the excavator screws the bottom of the pile body into the sandy foundation under the action of the outer helical blade. The bottom of the sleeve is provided with a pile tip integrated with the sleeve, the pile tip is conical, and the outer sides of the pile tip and the sleeve are provided with integral external helical blades. Or, the sheathed tube is inside to be provided with the toper guide plate, the toper guide plate is the toper, and from the bottom to the top reduces, and toper guide plate center is provided with the through-hole and link up with set of pipe hole, and the toper guide plate inserts the tubular pile hole and dodges the tubular pile inner wall. The utility model discloses need not the pilot hole and can improve the efficiency of construction with tubular pile screw in sand and soil basis, improve the compressive resistance, the resistance to plucking of tubular pile simultaneously.

Description

A precast tubular pile head structure and tubular pile for sandy foundation

Technical Field

The utility model belongs to concrete pipe pile field, concretely relates to a precast tubular pile head structure and tubular pile for sand foundation.

Background

Precast concrete pipe piles are widely used in highways, bridges, ports, docks, industrial and civil buildings. The prestressed concrete pipe pile is mainly suitable for the regions with covering layers of artificial filling, soft soil, cohesive soil, silt, fine sand and medium sand, and the bearing layer is generally selected from coarse sand, gravel, round gravel and weathered rock.

Photovoltaic construction project need can compromise economic development and ecological protection when clean electricity generation, and this company has designed a section and has exempted from to weld festival material type precast concrete tubular pile, through pre-buried nut sleeve, linking bridge and sleeve pipe avoid adopting the welding mode to make supports etc. and tubular pile firm in connection.

However, when the pipe pile is buried in a sandy foundation such as a desert or a sandy land, the effect of vibration hammering is inferior to that of a soil foundation due to the fluidity of sand. The existing mode is a wet hole leading mode, a large amount of water is consumed to lead holes after sand is formed, and then the precast concrete pipe piles are pressed and buried in the holes.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel a precast tubular pile head structure and tubular pile for sand foundation, be provided with the helical blade structure, need not the draw hole, through the rotatory clamping jaw of excavator, can make the tubular pile easily get into husky soil through the rotation, improve the resistance to compression, the resistance to plucking effect of tubular pile simultaneously.

In order to solve the technical problem, the utility model provides a prefabricated pipe pile head structure for a sand foundation, which comprises a sleeve and an external spiral blade,

the sleeve is cylindrical and is sleeved at the bottom of the pile body, the pile body is a hollow cylinder body elongated concrete prefabricated part, the sleeve is fixedly connected with the pile body,

the outer spiral blades are fixed on the sleeve, and under the action of the outer spiral blades, the rotary clamping jaws of the excavator screw the bottom of the pile body into the sand foundation.

Furthermore, the bottom of the sleeve is provided with a pile tip integrated with the sleeve, the pile tip is conical, and the outer sides of the pile tip and the sleeve are provided with integral external helical blades.

Further, the inside toper guide plate that is provided with of sleeve pipe, the toper guide plate is the toper, and from the bottom to the top reduces, and toper guide plate center is provided with the through-hole and link up with set of pipe hole, and the toper guide plate inserts the tubular pile hole and dodges the tubular pile inner wall.

Further, the material of the outer helical blade and the inner helical blade is one of the following materials: plain carbon steel, high manganese steel, stainless steel.

Furthermore, a plurality of connecting holes are uniformly distributed in the sleeve, an embedded nut sleeve is embedded in the bottom of the side face of the pile body before concrete is solidified, and a bolt penetrates through the connecting holes and is matched with the nut sleeve to lock the sleeve on the pile body.

Furthermore, the sleeve is welded on a hoop of the pile body, and the hoop is sleeved on the lower portion of the outer side of the pile body.

Further, the sleeve is welded or fixed on an end plate of the bottom end face of the pile body through bolts.

Correspondingly, provide a precast tubular pile for sand foundation, the bottom is connected with above-mentioned head structure, and the middle part is provided with the bush, and the bush passes through the nut sleeve fixed connection of pre-buried in the pile body with the pile body, be provided with outer helical blade on the bush, and with the outer helical blade isoparametric of head structure and syntropy.

The utility model has the advantages that:

a precast tubular pile head structure and tubular pile for sandy basis, can be connected with the tubular pile, need not the guiding hole and can improve the efficiency of construction with tubular pile screw in sandy soil basis, improve the compressive resistance, the resistance to plucking of tubular pile simultaneously, make precast concrete pile basis more firm.

Drawings

Fig. 1 is an enlarged schematic perspective view of a head structure of a precast tubular pile with a pile tip for a sand foundation and a tubular pile according to the present invention;

fig. 2 is an enlarged cross-sectional view of the head structure of the precast tubular pile with a pile tip for a sand foundation and the tubular pile according to the present invention;

fig. 3 is a schematic perspective view of the head structure of the tubular pile with the pile tip of the present invention supporting the photovoltaic panel in cooperation with the tubular pile;

fig. 4 is an enlarged schematic perspective view of the internal rotation type precast tubular pile head structure and tubular pile for sand foundation.

Fig. 5 is an enlarged schematic sectional view of the internal rotation type precast tubular pile head structure for sand foundation and the connection between the tubular pile and part of the pile body;

fig. 6 is a schematic perspective view of the head structure of the inward turning tubular pile of the present invention supporting a photovoltaic panel in cooperation with the tubular pile;

fig. 7 is a schematic front view of the pipe pile adopting the head structure according to the present invention;

in the figure: 1. the device comprises a pile body, 2 a nut sleeve, 3 a sleeve, 4 a connecting hole, 5 an external spiral blade, 6 a pile tip, 7 a conical flow guide plate, 8 an internal spiral blade, 9 and a lining.

Detailed Description

The following detailed description of the present invention will be made in conjunction with the accompanying drawings and specific embodiments.

The first embodiment is as follows:

a prefabricated tubular pile head structure and tubular pile for sand foundation includes a sleeve 3 and an external spiral blade 5. The sleeve 3 is cylindrical and is sleeved at the bottom of the pile body 1, the pile body 1 is a hollow cylindrical elongated concrete prefabricated part, the sleeve 3 is fixedly connected with the pile body 1, the external spiral blade 5 is fixed on the sleeve 3, and under the action of the external spiral blade 5, the rotary clamping jaw of the excavator is used for screwing the bottom of the pile body 1 into a sand foundation.

Example two:

as shown in fig. 1, 2 and 3, the bottom of the sleeve 3 is provided with a pile tip 6 integrated with the sleeve 3, the pile tip 6 is conical, and the outer sides of the pile tip 6 and the sleeve 3 are provided with an integrated external helical blade 5.

Example three:

as shown in fig. 4, 5 and 6, a conical guide plate 7 is arranged inside the sleeve 3, the conical guide plate 7 is conical and is reduced from bottom to top, a through hole is formed in the center of the conical guide plate 7 and is communicated with an inner hole of the sleeve 3, and the conical guide plate 7 is inserted into the inner hole of the tubular pile and avoids the inner wall of the tubular pile.

The outer spiral blade 5 and the inner spiral blade 8 are made of one of the following materials: plain carbon steel, high manganese steel, stainless steel.

Example four:

as shown in fig. 3 and 6, the other parts are the same as those of the first, second and third embodiments, except that a plurality of connecting holes 4 are uniformly distributed on the sleeve 3, an embedded nut sleeve 2 is embedded at the bottom of the side surface of the pile body 1 before concrete is solidified, and a bolt penetrates through the connecting hole 4 to be matched with the nut sleeve 2 to lock the sleeve 3 on the pile body 1.

Example five:

as shown in fig. 3 and 6, the other parts are the same as the first, second and third embodiments, except that the sleeve 3 is welded to the anchor ear of the pile body 1, and the anchor ear is sleeved on the lower part of the outer side of the pile body 1. Or the sleeve 3 is welded or fixed on the end plate of the bottom end face of the pile body 1 through bolts.

Example six:

as shown in fig. 7, the bottom of the precast tubular pile for the sand foundation is connected with the head structure, the middle of the precast tubular pile is provided with a lining 9, the lining 9 is provided with an external helical blade 5, and the lining 9 is fixedly connected with the pile body 1 through a nut sleeve 2 pre-embedded in the pile body 1; and has the same parameters and the same direction as the outer helical blade 5 of the head structure.

The utility model discloses a theory of operation:

when piling in sandy soil, a hole needs to be led, otherwise, the pile is difficult to be led due to the fluidity and the incompressibility of the sand.

The utility model discloses a metal system head end structure can cup joint in 1 bottom of pile shaft, sets up outer helical blade 5, and through the rotatory clamping jaw of excavator, with the husky soil of tubular pile screw in, avoid the wet process to draw the hole to the waste at water source, reduce the construction degree of difficulty.

The structure of the sleeve 3 can be in a mode that the lower part is provided with a pile tip 6, and can also be in a mode that a conical guide plate 7 is arranged inside, the mode of the pile tip 6 is the same as that of the traditional pile tip 6, and only the outer spiral blade 5 is arranged; the conical guide plate 7 is characterized in that the inner spiral blade 8 and the outer spiral blade 5 are opposite in rotation direction, and when the pipe pile rotates under the action of the rotary clamping jaw, the inner and outer parts rotate simultaneously, so that the sand in the pipe pile can enter the pipe pile more easily, and the pile entering speed is increased.

The outer spiral blades 5 and the inner spiral blades 8 increase the efficiency of rotating into the pile, and simultaneously ensure the compressive resistance and the pulling resistance of the pipe pile, so that the precast concrete pile foundation is firmer.

The tubular pile in the sixth embodiment is to improve the depth and effect of inserting the pile, when the depth of inserting the pile is needed to be deep, the outer helical blade 5 is arranged in the middle of the pile body 1, the helical effect of the bottom head structure is achieved, and the pile inserting is accelerated.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above-mentioned embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a precast tubular pile head structure for sand foundation which characterized in that: comprises a sleeve (3) and an external spiral blade (5),

the sleeve (3) is cylindrical and is sleeved at the bottom of the pile body (1), the pile body (1) is a hollow cylindrical elongated concrete prefabricated component, the sleeve (3) is fixedly connected with the pile body (1),

the external spiral blades (5) are fixed on the sleeve (3), and the rotating clamping jaws of the excavator screw the bottom of the pile body (1) into the sand foundation under the action of the external spiral blades (5).

2. The precast tubular pile head structure for sand foundation according to claim 1, wherein: the pile tip is characterized in that a pile tip (6) integrated with the sleeve (3) is arranged at the bottom of the sleeve (3), the pile tip (6) is conical, and integral external helical blades (5) are arranged on the outer sides of the pile tip (6) and the sleeve (3).

3. The precast tubular pile head structure for sand foundation according to claim 1, characterized in that: sleeve pipe (3) inside is provided with toper guide plate (7), toper guide plate (7) are the toper, and from the bottom up dwindles, and toper guide plate (7) center is provided with the through-hole and link up with sleeve pipe (3) hole, and toper guide plate (7) insert the tubular pile hole and dodge the tubular pile inner wall.

4. A precast tubular pile head structure for sand foundation according to any one of claims 1 to 3, characterized in that: the outer helical blade (5) and the inner helical blade (8) are made of one of the following materials: plain carbon steel, high manganese steel, stainless steel.

5. A precast tubular pile head structure for sand foundation according to any one of claims 1 to 3, characterized in that: a plurality of connecting holes (4) are uniformly distributed in the sleeve (3), an embedded nut sleeve (2) is buried in the bottom of the side face of the pile body (1) before concrete is solidified, and a bolt penetrates through the connecting holes (4) to be matched with the nut sleeve (2) so as to lock the sleeve (3) on the pile body (1).

6. A precast tubular pile head structure for sand foundation according to any one of claims 1 to 3, characterized in that: the sleeve (3) is welded on the hoop of the pile body (1), and the hoop is sleeved on the lower portion of the outer side of the pile body (1).

7. A precast tubular pile head structure for sand foundation according to any one of claims 1 to 3, characterized in that: the sleeve (3) is welded or fixed on an end plate of the bottom end face of the pile body (1) through bolts.

8. The utility model provides a precast tubular pile for sandy basis which characterized in that: the bottom of the prefabricated pipe pile head structure for the sand foundation is connected with any one of claims 1 to 7, a lining (9) is arranged in the middle of the prefabricated pipe pile head structure, and the lining (9) is fixedly connected with the pile body (1) through a nut sleeve (2) embedded in the pile body (1); the bushing (9) is provided with an external spiral blade (5) which has the same parameters and the same direction as the external spiral blade (5) with the head structure.